Problemas com Guest Addition Virtual Box

Olá,

Estou tendo problemas com a versão do Guesto Additions do Virtual Box. Quando rodo o vagrant up tenho tido problemas. Aparece a seguiente mensagem:

    default: The guest additions on this VM do not match the installed version of
    default: VirtualBox! In most cases this is fine, but in rare cases it can
    default: prevent things such as shared folders from working properly. If you see
    default: shared folder errors, please make sure the guest additions within the
    default: virtual machine match the version of VirtualBox you have installed on
    default: your host and reload your VM.
    default:
    default: Guest Additions Version: 4.2.0
    default: VirtualBox Version: 6.0

Já tentei reinstalar o Virtual Box, atualizar o Guest Additions, mas sempre acontece a mesma coisa. Só consegui atualizar o Guest Additions na propria máquina virtual.